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由于现有的一些并行工程定量化模型中修改设计微循环的细节特征描述得还不够充分 ,本文提出了一种新的基于产品 -工艺设计活动对网络的定量化模型来描述并行工程产品开发过程 ,并且给出了产品 -工艺设计活动对平均持续时间与产品或工艺设计活动资源占用率的计算方法 .在此基础上 ,将并行工程产品开发过程的计划制订问题建模成一个有资源约束的项目调度问题 .与其它此类问题不同的是 ,在本文中 ,分配给产品开发项目的各类资源的数量不是事先给定的 ,而是与最优产品开发计划一起获得的 ,所以这是一个资源分配与计划制订的集成优化问题 .本文提出了一种新的基于分枝定界的算法来解决此问题并引入一个启发式规则来提高算法的搜索效率
Because the detailed features of the modified design microcirculation in the existing quantitative models of concurrent engineering are not fully described, this paper proposes a new quantitative model based on product-process design activity to describe the concurrent engineering product development process. , and gives the calculation method of the product-process design activity’s average duration and resource occupancy rate of product or process design activity. Based on this, the modelling problem of parallel engineering product development process is modeled as a resource-constrained problem. Project scheduling problems. Unlike other such issues, in this paper, the amount of resources allocated to product development projects is not given in advance, but is obtained together with the optimal product development plan, so this is a Resource allocation and planning formulation integration optimization problem. This paper proposes a new branch-and-bound algorithm to solve this problem and introduces a heuristic rule to improve the search efficiency of the algorithm.